This means an ECG showing atrial fibrillation will have no visible P waves and an irregularly irregular QRS complex. The ventricular rate is frequently fast, unless the patient is on AV nodal ...

The QRS complex is irregular and coarse "fibrillatory waves" are present (see atrial fibrillation ... ventricular rate slows, the QT interval prolongs. The absolute QT interval on this ECG is ...

The regular arrhythmia occurring at the beginning of the electrocardiogram was identified as ventricular bigeminy ... in the initial and follow-up ECG. VPCs (also called ventricular premature ...